Frost dates in Hartland, MN
The average last spring frost in Hartland is around April 28 and the first fall frost is around October 9. That gives Hartland an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 9 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | September 21 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | November 5 |